Door-lock.



P. PAPENFOTH. .DOOR LOCK.

' APPLICATION FILED NOV. 19, 1904.

No. 890,172. PATENTED JUNE v9., 1908.

2 SHEETS-SHEET 1.

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2 SHEETS-SHEET 2.

PATVENTED JUNE 9, 1908.

DOOR LOCK.

APPLICATION FILED Nov.19, 1904.

I. PAPENFOTH.

rus NoRRrs PETA-Rs co., WASHINGTON, a, c.

UNITED sTATEs PATENT oEEroE.

PAUL PAPENFOTH, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO RUSSELL & ERWIN MANUFACTURING COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

DOOR-LOCK.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed November 19, 1904. Serial No. 233,408.

To all whom t may concern:

Be it known that I, PAUL PAPENEOTH, a citizen of the United States, residing at New Britain, county of Hartford, and State of Connecticut, have invented certain new and useful Improvements in Door-Locks, of which the following is a iull, clear, and exact description.

My invention relates to improvements in lock mechanism, and particularly to a lock of a special value for use on hotel doors. The mechanism of a lock adapted to this special use must be simple in construction and operation and proof against accidental locking, unlocking or interference by improper use of the various keys which are, or may be, employed therewith. In connection with this lock three keys are employed, to wit; a pass-key or guest-key ordinarily bitted so as to 'lit only one lock. Second; a masterfkey or servants key bitted to lit several locks, for example, all of the locks on one floor, and third, a grand-master-keyior the proprietor by which he can lock or unlock any of the locks on the several iloors. In each lock I employ the usual latch bolt together with two locking bolts.

The pass-key, or guest-key, when inserted from the outside, is intended to operate one of the bolts, and when inserted from the inside will operate the other bolt, and will even retract the 'first bolt in case it has been inadvertently extended from the outside.

The master-key or servants-key is operable from the outside and is intended to operate only one bolt and that one only when the other bolt is retracted.

The grandemaster-key is operable from `the outside and by it either bolt may be retracted. This key is not intended to extend the first bolt at any time, and will not extend the second bolt without retracting the rst, unless, indeed, the first is already retracted.

. In the form shown, the pass-key and master-key are always inserted right side up, while the grand-master-keyis inserted With its bitted portion uppermost. This grandmaster-key operates, in the form shown, directly upon the bolt tumblers in locking or unlocking the door, whereas the guest-key, when locking or unlocking the door from the inside, operates indirectly on the tumblers through a supplemental tumbler, which is suitably connected `with the other tumblers arise wherein these functions are important, i

and I cite them merely as illustrative of some of the many advantages of my improved construction.

Figure l is a front view of a lock embodying the improvements of my invention. Fig. 2 is a view from the outer side of the same, part of the casing being broken away to shoW the mechanism. Fig. 3 is a rear view of the same, part being broken away. Fig. 4 is a fragmentary side view illustrating one of the bolts partially extended. Fig. 5 is a view from the inner side,parts being in section and showing one of the bolts extended. Fig. 6 is a horizontal sectional View taken on a plane through the lower bolt in Fig. 2 and looking upward.

l indicates the plate which forms what may be called the outer side of the casing of the lock. The lock is so mounted in the door that this side faces out or toward the hallway.

2 is the inner side of the casing.

3 is the front or faceplate of the lock.

Suitable knob-actuated latch-mechanism may be provided if desired as customary, but does not involve my invention.

4 is a bolt which is suitably supported in the lock by proper guides. 5 represents a tumbler or series of tumblers for said bolt, but the number is immaterial.

6 represents a spring for holding a tumbler 5 in its normal locking position.

7 is a fence or post carried by the bolt 4 with which the tumbler 5 cooperates to hold the bolt extended or retracted. A key-hole a: is provided in the outer side-plate 1 and a corresponding recess or perforation in the rear side-plate 2 for the key stump. The pass and master-keys are constructed to operate this bolt 4 by insertion right side up through the outer key-hole n 8 is the second bolt also suitably guided in the lock-casing. 9, 10 and 11 are its tumblers.

:iso

' when the 11 and throws the bolt 8 as desired.

12 is the Jfence carried by the bolt 8 for cooperating with said tumblers so as to hold the bolt 8 retracted or extended.

i y is the key-hole in the outer plate 1 which in this instance merges with the key-hole a: and is upside down with relation thereto.

fy is a recess or perforation in the inner plate 2 'for the key stump.

The grand-master-key is inserted upside down from the outside in the key-hole y and operates directly an the tumblers 9, 10 and v These same tumblers are adapted to be operated by a passkey inserted from the inside through the key-hole .c in the inside plate of the lock. z represents the recess or perforation in the front-plate 1 for the stump of the pass-key when thus inserted. In order that this passkey may operate properly when inserted from the inside, l have provided intermediate tumbler connecting and alining mechanism which includes the tilting aliner 13 mounted on iixed pivot 18a ,and the spring-pressed supplemental tumbler 14 for actuating the aliner. The tumbler 14 has a pair of projections 15, 15, between which the tip of the aliner 13 lits. The opposite end or tail of the aliner has a downwardly projecting lug 16 which passes through the tumblers 9, 10, 11 and 14.v l/Vhen the passkey is inserted from the inside of' the door and turned, it

lcooperates with the tumbler 14 at the outside of bolt 8 and thus raises the outer tip of the lever 13. This moves the lug 16 downward and brings all the tumbler gates into alineinent so that the bolt 8 is `free to move. The tumbler 14 is directly operated upon only by the pass-key inserted from the inside and consequently it is obvious that the door cannot be locked or unlocked 'from the inside except by the pass-key which has a suitable bit therefor. When the door has been locked from the inside the parts will be in the position shown in Fig. 5. The bolt 8 may now be retracted from the outside only by means of the grand-master-key which is inserted upside down in the key-hole y as before stated. When this is done it is impossible for the pass-key to be withdrawn from the lock. This will be apparent from Fig. 5 wherein the pass-key is shown in dotted outline resting on the lug or projection e3 and under bolt 8.

'It often happens that the door is locked from the outside by a maid through mistake person who is in the room has failed himself to lockthe door. This locking would be effected by the upper bolt 4 and the parts would then be in the position shown in dotted outline in Fig. 2.- A l have provided for this, and other emergencies, connecting mechanism between the 'first and second bolts as well as the tumblers therefor, whereby bolt 4 may be retracted by the operation oi the nass-key from the inside of the door.

y 17 is a pivoted lever whichhas'one end adapted to engage with the walls of a recess in the back of the bolt 4, and the other end adapted to engage with the walls of a, recess in the back of bolt 8.

18 is a lifting-rod, the upper end of which stands beneath the ti s of the tumblers 5. v

The lower end has a s ot or recess in which lits the lug 14 carried by the tumbler 14. When the tumbler 14 is raised by the passkey 4inserted through the inside key-hole c, the rod 18 raises the tumblers 5 and aline the gates so that the fence 7 is free to move longitudinally. At the same time, the lever 17 is oscillated by the extension of bolt 8 and#J retracts the bolt 4 as bolt 8 is projected. This brings the arts into the position shown in Fig. 5. Obviously now the bolt 8 may be retracted in the usual manner and this will not extend bolt 4 because of the clearance in? the recess in which the upper end of lever 17 stands. Inspection of Fig. 5 will also show that when the bolt 8 is extended and locked by its tumblers, the lever 17 blocks the bolt 4 so that the latter cannot be operated froml the outside by the master-key. y

Provision is thus made in this lock to prevent interference with their proper duties and rights by holders of the various keys.

The proprietor with the grand-master-key;

controls the situation and can always unlock the door and also lock it. The guest with a pass-key is limited only by the operation of the proprietors grand-master-key. The servant with the master-key has only such control as' is unrestricted by the useof the grand-master and ass-keys.

W at l claim is:

1. ln a lock mechanism, the combination of a bolt operable in either direction by a key.

inserted from the outer side of the lock only, and a second bolt 0 erable in either direction by a key inserted ioin the outer side of the lock and also operable in either direction by a dierent key inserted from the inner side of the lock, and means of connection between said bolts whereby said lirst bolt when extended rnay be drawn by the projection of said second bolt.

2. ln a lock mechanism, the combination of a bolt, a series of tumblers coperating therewith and operable b a key inserted from the outer side of the ook, and tumbler alining mechanism comprising a supplemental tumbler and a tilting lever cooperating with said series of tumblers whereby said bolt may be operated by a different key inserted from the inner side of said lock onl 8. In a lock, the combination of two loci;- ing bolts, means for permitting the operation of either of said bolts by a grand-master-key,

one of said bolts being operable by amaster` lock, means for preventing the o eration of the master-key when one of the olts is extended, means for permitting the retraction of one of said bolts by the passkey inserted in the inner side ofthe lock in case said bolt has been extended by the operation of the grand-master-key in the outer side of the lock, all of said means coperating to permit the retraction of either bolt by the grandmaster-key inserted in the outer side of the lock whether either bolt has been previously extended by the master or pass-key.

4. In a lock mechanism, the combination oi' a bolt, a series of tumblers coperating therewith and operable by a key inserted from the outer side of the lock, and alining mechanism comprising a supplemental tumbler, a tilting lever and a rod coacting therewith and cooperating with said series of tumblers whereby said bolt may be drawn by a key inserted from the inner side of said lock.

5. In a lock, the combination of a bolt operable by a key inserted from the outer side and operable by a diiierent key inserted from the inner side, and means for preventing the operation of the key from the inner side when the bolt has been extended by the key from the outer side.

6. In a lock, the combination of a bolt operable by a grand-masterkey inserted from the outer side of the lock, land also operable by a pass-key inserted from the inner side of the lock, and a stop for preventing the withdrawal of the pass-key, said grand-masterkey being adapted to prevent the retraction of said bolt by said passekey.

7. In a lock mechanism, thevcombination I of a casing having a double key-hole in the outer side and a single key-hole on the inner side, two bolts mounted in said casing adj acent to said key-holes, and tumblers for said bolts whereby one of said bolts may be extended or retracted from the outside by a grand-master-key, and whereby the other of said bolts may be extended or retracted from the outside by a pass or a master-key, and connections between said tumblers and between said bolts whereby the last mentioned bolt may be operated from the inside bya pass-key for retraction only, said pass-key operating the iirst mentioned bolt in either di rection from the inside.

8. In a lock, a bolt operable from the outer side by a grand-master-key and normally operable from the inner side by a pass key, and means for preventing withdrawal of the pass-key when the bolt has been retracted by the operation oi the grand-mas ter-key after having iirst been extended by the pass-key.

9. In a lock, a bolt operable by a key inserted from the outer side of' the lock, a second bolt operable by a second key inserted from the outer side of the lock and also operable by a third key inserted from the inner side of the lock, a tumbler for the irst bolt releasable by all the keys, a tumbler for the second bolt releasable by the second and third keys, said second key operating on the last mentioned tumbler directly, the third key operating thereon indirectly.

l0. In a lock, a bolt operable by a key inserted from the outer side of the lock, a second bolt operable by a second key inserted from the outer side of the lock and also operable by a third key inserted from the inner side of'the lock, a tumbler for the first bolt releasable by all the keys, a tumbler for the second bolt directly releasable by the second key and indirectly releasable by the third key, and means of connection between the bolts whereby the irst bolt may be operated only by the projection of the second bolt when the latter is actuated by the second or third keys.

11. In a lock, a bolt, a tumbler therefor, a key insertible from the outer' side of the lock for releasing said tumbler, a second bolt, a tumbler therefor, a second key insertible from the outer side of the lock for releasing said second tumbler, a third tumbler, means of connection between said third tumbler and the iirst and second tumblers, and a third key insertible from the inner side of the look for operating said third tumbler and simultaneously releasing the Iirst and second tumblers.

12. In a lock, a bolt, a plurality of gated tumblers therefor, said tumblers being operable at one edge of the bolt, a secondary tumbler operable at the opposite edge of said bolt, and a tumbler alining device coperatively connecting all of said tumblers whereby the operation of said secondary tumbler will aline the gated portions of the other tumblers to free said bolt.

18. In a look, a bolt, a plurality of gated tumblers operable by direct lengagement with a key inserted at one edge of said bolt, a supplemental tumbler operable by a different key inserted at the opposite edge of the bolt, and tumbler alining mechanism coperatively connecting said supplemental tumbler with said first mentioned gated tumblers whereby, when said supplemental tumbler is actuated, the gated portions of said other tumblers willbe alined to free the bolt.

Signed at New Britain, Connecticut, this 16th day of Nov. 1904.

PAUL PAPENFOTH.

Witnesses:

M. S. WIARD, C. E. RUssELL. 

